2005-12-28 01:01:11

by Alessandro Zummo

[permalink] [raw]
Subject: [RFC] RTC subsystem, interrupt handling



No patches this time :)

just a few questions... the original RTC driver
supports user programmable interrupts
via rtc_register/rtc_control/rtc_unregister.

The only user in the kernel is the sound core.

My RTC subsystem doesn't support this behaviour yet,
so I was thinking about the best way to add it.

Current code assumes there's only one rtc in the system
while the new one must have a way to find a specific one.

Would something like that be acceptable:

struct class_device *rtc_open(char *name)
{
struct class_device *class_dev = NULL,
*class_dev_tmp;

down(&rtc_class->sem);
list_for_each_entry(class_dev_tmp, &rtc_class->children, node) {
if (strncmp(class_dev_tmp->class_id, name, BUS_ID_SIZE) == 0) {
class_dev = class_dev_tmp;
break;
}
}
up(&rtc_class->sem);

return class_dev;
}

?

--

Best regards,

Alessandro Zummo,
Tower Technologies - Turin, Italy

http://www.towertech.it